MUTCD 11th Edition (2023)
Section 4G.02 — Flashing Operation – Transition into Flashing Mode
Manual on Uniform Traffic Control Devices, Section 4G.02. Standards, guidance, options and support statements, with figures and cross-references.
Section 4G.02 Flashing Operation – Transition into Flashing Mode Option: 01 The transition from steady (stop-and-go) mode to flashing mode, if initiated by a conflict monitor (malfunction management unit) or by a manual switch, may be made at any time.Standard: 02 Programmed changes from steady (stop-and-go) mode to flashing mode shall be made under either of the following circumstances: A. At the end of the common major-street red interval (such as just prior to the start of the green in both directions on the major street), or B. Directly from a CIRCULAR GREEN signal indication to a…
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